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Cannot ping DAG IP RRS feed

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    I have a two node Exchange 2010 DAG.   

    One is active and sits in Site A and one is passive for replication purposes and sits in Site B.

    In Failover Cluster Manager, the DAG is set up with two IP addresses - one is online and one is offline.  

    Today I noticed that for some strange reason, the passive server at Site B cannot ping the current online DAG address at all.  But it can ping other physical hosts using the same subnet as the DAG address.  In fact nothing at Site B can ping the DAG address.  But they can ping everything else.  Everything at Site A is working perfectly.   There is nothing wrong with the routing, everything checks out.  Nothing is being blocked.

    Why is this happening?


    • Edited by khunkao Monday, March 16, 2015 6:48 PM
    Monday, March 16, 2015 6:46 PM

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    Then something has to be wrong on the network configuration. Treat this as standard network troubleshooting and triple check everything.

    Cheers,

    Rhoderick

    Microsoft Senior Exchange PFE

    Blog: http://blogs.technet.com/rmilne  Twitter:   LinkedIn:   Facebook:   XING:

    Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

    Monday, March 16, 2015 10:16 PM

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    Is this OS Windows 2008 R2?  If so look at the firewall fix that is in this post:

    http://blogs.technet.com/b/rmilne/archive/2013/11/20/exchange-2010-tweaks.aspx

    Cheers,

    Rhoderick

    Microsoft Senior Exchange PFE

    Blog: http://blogs.technet.com/rmilne  Twitter:   LinkedIn:   Facebook:   XING:

    Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

    Monday, March 16, 2015 7:24 PM
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    It is Windows 2008 R2 

    I just checked and it still says "Domain Network"

    Also Windows Firewall is not turned on at all.

    Monday, March 16, 2015 7:45 PM
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    Then something has to be wrong on the network configuration. Treat this as standard network troubleshooting and triple check everything.

    Cheers,

    Rhoderick

    Microsoft Senior Exchange PFE

    Blog: http://blogs.technet.com/rmilne  Twitter:   LinkedIn:   Facebook:   XING:

    Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

    Monday, March 16, 2015 10:16 PM
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    Hi,

    check the FW and also tracert will help you 

    Regards

    Muthu

    Thanks Muthu

    Tuesday, March 17, 2015 2:29 PM